What is the soultion to -3x7=28.

Answers

Answer 1

Answer: the answer is x= -29/21

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Jut for every answer choose negative or poitive1.(–21.9) • (–6) • (–1.1) • (–0.47)
a. negative b. positive

2. (–39) • (0.5) • (–0.92) • (6.1) • (–12
a. negative b. positive 3.
(0.01) • (–43) • (7.2) • (–86)
a. negative b. positive 4.(–3.5) • (–16) • (7) • (–0.4) • (5.8)
a. negative b. positive

Answers

Negative times a Negative equals a Positive
Positive times a Positive equals a Positive
Positive times a Negative equals a Negative
Negative times a Positive equals a Negative

1.

Negative * Negative * Negative * Negative

Positive * Positive

Positive

2

Negative * Positive * Negative * Positive * Negative

Negative * Negative * Negative

Positive * Negative

Negative

(0.01) • (–43) • (7.2) • (–86)

Positive * Negative * Positive * Negative

Negative * Negative

Positive

(–3.5) • (–16) • (7) • (–0.4) • (5.8)

Negative * Negative * Positive * Negative * Positive

Positive * Negative * Positive

Negative

-21.9 x -6 x -1.1 x -0.47 = +67.9338

-39 x 0.5 x -0.92 x 6.1 x -12 = -1313.208

0.01 x -43 x 7.2 x -86 = +266.25600

-3.5 x -16 x 7 x -0.4 x 5.8 = -909.44

The average rate of change of f(x) is given by the formula f(7)-f(3)/4 . Over what interval does this formula give the average rate of change for f(x)?The answer choices are
A. [4,7]
B. [-7,3]
C. [3,7]
D. [3,4]

Answers

Answer:

Option C is correct

[3,7]

Step-by-step explanation:

Average rate of change(A(x)) of f(x) over an interval [a, b] is given by:

$A(x) = (f(b)-f(a))/(b-a)$

As per the statement:

The average rate of change of f(x) is given by the formula:

$A(x) = (f(7)-f(3))/(4)$

we can write this as:

$A(x) = (f(7)-f(3))/(7-3)$

By definition, we have

b = 7 and a = 3

⇒interval = [3, 7]

Therefore, the interval does this formula give the average rate of change for f(x) is, [3,7]

Answer:

the answer is c

Step-by-step explanation:

What is 16% of 25?

A.64
B.16
C.6
D.4

Answers

Answer is 4 because 100 is divisible by 25 by 4 and 16 is divisible by 4 so the answer is 4

16/100*25 =16/4=4
the answer is 4

The perimeter of a rectangle is 360m. If its length is decresed by 20 % and its breadth is increased by 25% we get the same perimeter . Find the dimention of the rectangel

Answers

Answer: the length of the rectangle is 100m and the breadth is 80m

Step-by-step explanation:

The formula for determining the perimeter of a rectangle is expressed as

Perimeter = 2(length + breadth)

Let the length of the initial rectangle be and the breadth of the initial rectangle be b

The perimeter of a rectangle is 360m. Therefore,

2(l + b) = 360

l + b = 180

If its length is decreased by 20 %, the new length would be l - 0.2l = 0.8l

its breadth is increased by 25%, the new breadth would be b + 0.25b = 1.25b

we get the same perimeter. Therefore

2(0.8l + 1.25b) = 360

0.8l + 1.25b = 180 - - - - - - - 1

Substituting l = 180 - b into equation 1,it becomes

0.8(180 - b) + 1.25b = 180

144 - 0.8b + 1.25b = 180

- 0.8b + 1.25b = 180 - 144

0.45b = 36

b = 36/0.45 = 80

Substituting b = 80 into l = 180 - b, it becomes

l = 180 - 80 = 100

What is the period of the secant function

Answers

The period of the secant function is 2π, the correct option is C.

What is the Period of a Function?

The period of a function is the value at which the function repeats itself.

The secant function is

f(x) = sec x

The period of the secant function can be determined from its graph.

A graph of y = sec x is plotted and the period is determined.

The period of the secant function is 2π, the correct option is C.

To know more about Secant Function

brainly.com/question/2272598

#SPJ2

Answer: C 2pi

Step-by-step explanation:

Create an equation. Use the graph below to create the equation of the rainbow parabola.Graph of a parabola opening down at the vertex 0 comma 36 crossing the x–axis at negative 6 comma 0 and 6 comma 0.
Create a table of values for a linear function. A drone is in the distance, flying upward in a straight line. It intersects the rainbow at two points. Choose the points where your drone intersects the parabola and create a table of at least four values for the function. Remember to include the two points of intersection in your table.

Answers

Remember that a quadratic with two real zeroes can be written as $a(x - r_1)(x - r_2)$ , where $a$ is a constant and $r_1$ and $r_2$ are the zeroes (or roots) of the function. Since the graph shows that the two zeroes are at -6 and 6, the equation has to be of the form

$y = a(x - ({-6}))(x - 6)$ , or
$y = a(x + 6)(x - 6)$

To solve for a, let's use the point at the vertex (0, 36) and plug that in:

$36 = a(0 + 6)(0 - 6)$
$36 = {-36}a$
$a = {-1}$
(It makes sense that $a$ is negative since the parabola opens down.)

So, the equation of the parabola is

$y = -(x + 6)(x - 6)$ , or
$\bf y = -x^2 + 36$

Now for the second part, just pick any two points with which we can draw a line with a positive slope. I'll use x = -2 and 1:

$y = -({-2})^2 + 36 = {-4} + 36 = 32$
$y = -(1)^2 + 36 = {-1} + 36 = 35$

So, our two points are (-2, 32) and (1, 35). To find the equation of the linear function that goes through these two points, let's use slope-intercept form, which is $f(x) = mx + b$ . The slope $m$ is given by $(y_2 - y_1)/(x_2 - x_1)$ , so

$m = (y_2 - y_1)/(x_2 - x_1) = \frac{35 - 32}{1 - ({-2})} = 1$
So, the equation of the linear function so far is just $f(x) = x + b$ , and we can find $b$ by plugging in one of the points on the line:

$35 = 1 + b$
$b = 34$

Thus, the equation of the linear function is

$\bf f(x) = x + 34$

And you can find more points on the line simply by plugging other values of x, such as (0, 34) and (5, 39).

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Someone help please someone who is good at geometry!!!!!

1 pound = 100 penny= 10 penny x 10 penny = 1/10 pound x 1/10 pound = 1/100 pound = 1 penny => 1 pound = 1 penny How is this possible if 1 pound = 100 pennies